From PS Blog:

We know how important music is to our community of gamers, and this partnership combines the best in music with the best in gaming. PlayStation Network users will enjoy the convenience of linking your accounts to Spotify, making it easy to sign-up with your existing ID and subscribe to Spotify’s Premium service. You can also use Spotify while playing games

Sounds pretty cool!  For some Vita games, having stuff playing in the backg…

The new service will launch initially on PS4 and PS3, as well as Xperia smartphones and tablets.

Wait.  The service launches on every current Sony system except the Vita?

And Sony’s dropped Youtube and Maps from Vita, too.  Sigh…